The LM10 is not common today, but the circuit can be adapted to operate with equivalent components. The circuit is from the 1994 Linear Applications Handbook by National Semiconductor.
This classic positive side current sensor is from a 2005 Linear Technology manual. The transistor is...
This two stages amplifier is used with high impedance earphones. The transistors are very old...
Working with the previous circuits, this circuit resets after 1 second. The circuit is from Radio...